personally I'm a fan of the Meltdown.....Top Shelf Frozen Margarita with a shot of Grand Marnier on top..... no salt.........

The only person to claim the title of frozen margarita inventor is restaurateur Mariano Martinez of Dallas. In his office, Mariano proudly displays a proclamation from the state of Texas attesting to the fact that he invented the frozen margarita in the summer of 1971. He had gotten the idea from the Slurpee machines at the local 7-Eleven convenience store. He then modified a soft-serve ice cream machine to concoct his tasty innovation.